Wood-turning machine.



L. n. HAMBL E TON. wooo TURNING MACHINE.

APPLICATION FILED NOV. 27,1914.

' 9 SHEETS-SHEET I- m WITNESSES:

rm: mum: run: :41, FUND-1mm wasnmnmu. p. c.

Patented Dec. 3, 1918.

L. n. HAMBLETON.

WOOD TURNING MACHINE.

APPLICATION HLED NOV-27.1914.

9 SHEETS-SHEET 2- WITNESSES:

Patented Dec. 3, I918.

ATTORNEY.

mums PETERS m. Fnoruuirlm nMsumGmN. n. a

Patented Dec. 3, 1918.

9 bHEETS-SHEET 3 INVENTOR.

WITNESSES:

ATTORNEY.

L. D. HAMBLETON.

WOOD TURNING MACHINE.

APPLICATION FILED Nov. 21. 1914.

Patented Dec. 3, 1918.

9 SHEETS-SHEET 4.

W IT NESSES: [N V EN TOR,

A TTORNEY.

L. D. HAIVIBLETON.

WOOD TURNING MACHINE. APPLRCATION FILED NOV-27. I914.

Patented B603, 1918.

9SHEETSSHEET 5 WITNESSES:

w m M u v m n r w n n a u M a N r m L. D. HAMBLETON.

WOOD TURNING MACHINE.

APPLICATION FILED NOV- 27.1914.

Patented Dec. 3, 1918.

9 SH EETS-SHEET 6.

IN V EN TOR.

W I TNESSE S.-

ATTORNEY.

L. D. HAMBLETON.

WOO'D TURNING MACHINE.

APPLICATION FILED Nov. 27. I914.

Patented Dec. 3, 1918.

9 SHEETS SHEET 7.

WITNESSES: IN V EN TOR.

A TTORNEY.

me wanna P215"; co. Fume-(Hum, \vasumnrum p c.

L. D. HAMBLETON.

WOOD TURNING MACHINE.

APPLICATION FILED NOV. 27. I914.

9 SHEETS-SHEET 8- WI'INESSES! I INVENTOR. J UWW %%%M% A TTORNE Y.

L. D. HAMBLETON.

WOOD TURNING MACHINE.

APPLICATION FILED N0v 21.1914.

Patented Dec. 3, 1918.

9 SHEETS-SHEET 9.

WITNESSES: W m; i W w 5% MW 7/ m WZM ATTORNEY.

w'neoniinnn. r-raMnLEromor LOWELL, massnenusnrrs, nssienon T0 i arnzeirnnor LoWnLL. ivrnssnonnsnrrst WOOD-TURNIN G lVIACI-IIN menses.

To all whom it may ooncem:

' Be it known that I; LnoNAnnD. I-IAMB E- TON, a citizen of Canada,residing at Lowell, in the county of Middlesex and State oflvlassaehusetts,have invented certain new,

and useful Improvements in Wood-Turning Machines, of whiehthe followingis a speci fication.

My invention relates to autouiatie wood turning lathes and isparticularly adapted for the roughing and finishing of bobbins,

such as are used in spinning textile materials, or other articles ofasiinilar character and form. i

My machine is adapted or taking the blank which usually has alongitudinal oentering hole at one or bothends and Cutting it down orroughing it to a size and shape which nearly corresponds with thefinished product, and of immediately thereafter fin-t a The inventionresides in the selection and combination of partsof which some are newbutsonie are old. y

The stationary rotative head stock is used in connection with a tailstock which is not rotative but has a splndle capable of being advancedand retracted in direetline on the rota tii e axis of the head stock.This tail stock spindle, together with pins which pro ect from the headstock, allows blanks to be rapidly'fed by hand. a j

3 I may use on my machine round, square or other sliapect 'blanles andWhileI prefer to use round orsubstantially cylindrical blanks with anaxial hole in each end Iinay use blanks'wit'h an axial holein only oneend to fit overthe spindle of the tail stock. prefer to have the"advancing action of the tail stock so arranged thatitlis substantiallya blow which drivesthe other end of the blank onto the pins orspursofthe head ste k.

Aseriesof parallelflcircular sawsof wry ing diameters to correspondwiththe shape Specification of Letters Patent.

Application filed November 27,1914;. Seria1N0.8?4=,270. I

i Patented Dec. 3, 191%,

which it is desired to out are carried by a, shaft parallel with themain axis of the machine and are so arranged as toinove toward and fromsaid main at exactly the right time. Around these saws is ahood open atthe side next to the main axis and having a chute for carrying off thesawdust. These saws engage the blank as soon as it in posltion androtating, on a horizontal line midway betweenits top and bottom.

As soon' as the saws have done their roughing Work, they are Withdrawnand at the same instant or before, i finishing knife is advanced to thebottom line of the blank and begins finishing the blahk with no loss oftime Whatever. y

These relative positions of the roughing saws and finishing knifeespecially in con: neetion with the feed of the tail stock spin dleallow agreat' increaseinspeed, Which could not be obtained any otherposition of the cutting partswitl'iout interfetingwith the sawdust hoodover the saws.

WALTER L.

Wilt

To obtain thegreatestspeed, however, it

isnecessary tOarrange for the delivery WGllaS the feeding and cuttingand 1 pro ride for this by using aclearing arm opera-1 tive by power inconnection with the head stock to release the finished blank from thepins on the head stock the Tniornent' it be;

comes finished. This could be used alone, with some littleassistafncefroin the operator before feeding the neittblankyto dischargethe finished bobbin vvhiohiinight be allowed a to drop through themachine onto the floor or into a delivery chute, but this isfnotdesirable, howeverfon account ofthetlanger and impossibility ofarranging "aflsatisfac v arious operating arms and canis,

tory delivery chute without interfering with finge rswhich arefltinied tnioyeupon and a grasp the fin1shedbobb1n at the nionientit i is finishedand just before the clearing arm has pushed it toward the tail stock.The

result of this operation is that the blank slides throng-lithe fingersto clear the 'head stock and at the-same instantfthe tail stool:

is a retracted; then uieqanvery naemiaoff the finlshedblank out of theWay, lean} ing he operator free to mtmduee a; ne

blank. a

These deliveryfingers may be cleared from the bobbin in various wayswhereby, after it is carried clear of the mechanism, it may be dropped.into a. convenient chute through which it passes tothe desired point ofdelivery.

On account of the great speed of my ma chine, I find it desirable to usea steadying' finger whiLh is carried by an arm in position to engage andsteady the blank and to prevent chattering until the delivery fingersare ready to grasp it. Then the arm and steadying finger. are withdrawnwhile the finished bobbin is discharged. This kind of finger may be usedwith or without the delivery devices. If the finger is used with out thedelivery arms, it remains in contact with the bobbin until the clearingarm has pushed it away from the headstock and the tail stock hasre.eded. In such case, the friction of the steadying finger prevents thebobbin from following or being carried by the tail stock spindle.

v My machine is preferably so arranged that space is left for automaticfeed devices if desired.

For such an arrangement, I prefer to use delivery arms which work fromunderneath and a steadying arm operative with the finishing carriage asshown in Fig. 10.

In handling work, such as bobbins, which are heavier at one end than theother, it is desirable that the blank and finished bobbin should bepositively held at all times and that the finished bobbin should be sodelivered that it may be picked up by other machines performingsubsequent operations from a definite position which will always be thesame.

The delivery mechanism might be dis pensed with and the clearing armmight be dispensed with but in such case to prevent the finished bobbinfrom falling in the machinery, it would be necessary, if rapid work weredesired, to feed with the right arm and remove the finished bobbin withthe left. This would be dangerous on account of the proximity of therapidly revolving series of circular saws.

In the drawings, Figure 1 is a front elevation of my machine with someparts broken away to better show the construction. Fig. 2 is a sideelevation as from the left of Fig. 1 with the gears and gear coverstogether with some other parts omitted for clearness. Fig. 3 is a viewsimilar to Fig. 2 showing the connections and operation of the circularsaws and Fig. 4 is a similar view of the carriage for the finishingknives and tools. Figs. 5, 6 and 7 are detail side elevations showingconnections and operation of the steadying finger and of one form ofdelivery arms. Fig. 8 is a front elevation showing the details of theclearing arm and the delivery devices. Fig. 9 is a side elevationshowing the connections for driving the head stock, the cam shaft, andthe circular saws from a power shaft. Fig. 10 is a side elevationsimilar to Fig. 2, of a modified form of my machine. Fig. 11 is a planview of the machine shown in Fig. 1. Fig. 12 is a front view thereof.Fig. 13 is a detail of the spring plunger, and Fig. 14 of the saws.

In the drawings, A represents the frame of the machine, B indicates thehead stock mechanism which comprises a spindle 22 carried by bearings 26and a pulley 21 which is belted to power shaft 200 by means of belt 201.

22 is the head stock spindle which preferably carries spur chuck 23having a plurality of spurs or pins 24 and a steel center of usualconstruction. This steel center may be dispensed with however on someclasses of work.

The tail stock spindle 30 carries center 31 adapted to enter the hole inone end of the bobbin or blank C and is slidable in bearings 32 at sucha position that the center 31 will move along the main axis or work axiswhich coincides with the center of revolution of head stock B. Tailstock spindle 30 is advanced and retracted by means of a lever 33pivoted to the frame at 35 which carries at its other end 36 a rollerbearing 37 which engages the tail stock cam 38 carried by cam shaft D. Aspring 39 between the arm 36 and the frame of the machine tends toadvance spindle 30, and center 31 will remain in that position until thefinishing knives have done their work and the bobbin has been grasped bythe delivery fingers, if such are used. Lever 33 is forked at 34 andengages pins 202 on a collar 203 carried by spindle 30.

Pivoted on bearings 40 at the front of the machine are parallel,connected saw shaft supporting arms forming part of saw frame 41. Thisframe 41 extends below pivot 40 at 42 and is pivotally connected with anarm 43 which carries a roller bearing 44 in engagement with the saw cam45 carried by cam shaft D. This arm 43 is preferably hung on or pivotedto a depending arm 204 pivoted at its other end to the frame of themachine. This cam 45 is so timedthat at the instant the tail stock hasadvanced and engaged the blank which constitutes the work to be operatedon with the spur chuck of the head stock, the series of circular saws 46carried by saw shaft 47 which is supported by bearings 48 at the top ofthe arms of saw frame 41 will engage the blank and begin cutting. Cam 45should be so timed that these saws will advance rapidly until theyengage the blank after which they will move at a proper cutting speed asfar as is desired for roughing the blank.

These saws 46 are of varying diameters to 35 s top and bottom oftheblank'being operated =1 60 is operated toward andfrom. the Workimages semester with the shape to be given the blankubefore thefinishing knives take up the work,

Saw shaft 47 is driven through the medium ofpulley 49 driven by belt 205from power shaft 200.

"Thesesaws should have relatively thin blades andshould be set soclosely together that the edges of theteeth of the adjoining sawssubstantially touch. They should also be driv'en at a very high rate ofspeed in the same direction in which the blank is rotating so that therelative speed at the point of contact will be as high as possible.

I prefer to use saws thick with teeth set sothat there is substantiallyno gap between the saws, the saws being about 11 in diameter with teethabout apart. So arranged, with the bobbin blanks making about 5,000revolutions per minute and the saws about 3,000,*the action of the sawsis a grinding rather than a shearing action.

"'-Surrounding the series of saws 46 and covering the ends thereof isasaw hood 50 with a narrow flaring mouth 51 which, when the aws arecutting, spreads above and below the work being'operated upon. From thissaw hood50,which I will call the saw dust hood, extends a chute 52"which I will call the saw dust chute. This may be carried'to any;convenientplace where it is desired to deliver thesaw dust and movesback and fo'rtlrwith the-hood and with the saws.

{The cutting position of the saws is so arranged as tobe in a linemidway between the upon. Their axis is level with thework anis.represents the finishing carriage which is movable toward and from thework axis in suitable lways6l. This finishing carriage axisby means of afinishing carriage lever 62 pivotedto ELHBXlZBHSlOH of the carriage at63 and'pivoted to a'bracket 64 fixed to the frame of the machine. Theother end 65 of lever 62 carries a roller bearing 66 in engagement witha finishing cam 67 carried by cam shaft 'D.- A spring 68 between end 65and the frame of the machine tends to withdraw the carriage from thework axis.

This finishing carriage may carry a back knife 70, a cone knife 71,ahead knife 72 as.

- bobbinwhilethe knives are at World knives for formearn 67 eaabe seeme-era mistresses or without theother finishingtoolscari en;- gage theblank at the instant the roughing saws cease cutting." great deal oftime is saved by thus positioning the finishing knives With reference totheroughing saws. To prevent chattering, while'xthe finishing knivesandtools are cutting, I useanelastic steadyingfinger 80! This finger 80 isref;

erably shaped at its outer end to substan tially fit the curve oftheroughed bobbin barrel and is carried by aspring plungerjSll at the endof steadying arm .82 whereby it exerts an elastic steadying pressure on"the Its pressure also tends to overcome any tend: ency of the blank tofollow the tail stock when the tail stock is being withdrawn.

Steadying arm 82 is pivoted tothe frame of the machine at 83 andpreferably has an extension-84 carrying a counterweight 85. l he arm 86is pivoted to extension 84: atone end and at the other which carries theroller bearing 87 which engages the steadying cam 88 on cam shaft D, ispivoted :to an arrn 89 which is pivoted to another part oftheiframe ofthe machine. J i

Steadying cam 88 is so shaped and timed that steadying finger willengage the roughed bobbin atthe same time with the finishing knives andwill remain in engagement until the delivery fingers grasp the finishedbobbin, if deliveryfingers are used; or they are not used, until theclearing arm disengages the finished bobbin frorrithe head stock chuckand the tail stockspindle has also been withdrawn.

Slidable horizontally in suitable bearings in frame A preferablyunderneath the head stock mechanism and thebearings26 is a clearing rod121at oneendof, which is i carried the forked clearingarnrlQQ. Thisclearing. arm 122 terminates in two prongs forming a fork whichextendsuponfboth sides ofhead stockchuck 23; The distanee between the prongsofthe clearing armforlt is less than the diameter of the headlof thefinished bobbin whereby ifit is pushed for ward, it will engage suchhead andpush the bobbin head off from the head stockchuck and center.

b The clearing arm androd are operated by means of a lever 123 pivotedto the frame at 124: one end of which extends upward into the groove 125on rod 121 and the other end of which carries a roller bearing 126 inengagement withend cam 127 carriedby cam shaft D. A clearerarmspringf128b'etween lever 123 and the frame of the Ina chine tends toforce clearer arrn l22ftoward the tail stock wereit notfo r the actionof end cam. 127, I willlcalfthe clearing arm cam; j p b The deliveryarms and fingers shown in Figs. 5 and 7 are positioned at the back ofthe machine and are arranged to come forward and downupon the work asshown. Each delivery arm 90 carries at its end parallel fingers 91 whichare of spring metal fixed at one'end and having opposite concave curvesadjoiningeach other at their free ends with the tips thereof flared sothat when pressed down upon a bobbin or other work being operated upon,they will spread apart allowing the work to slip into the curves whereit .will be elastically held until removed therefrom by a force strongerthan the springs of the fingers 91. These fingers seize the blank.

I prefer to use two arms 90 each of which is pivoted at 92 to the frameof the machine and each of which has a lateral extension toward theother which are adjustably bolted together. One arm has an extension 93which carries a counterweight 9 1.

I prefer to pivot an arm 95 at one end to extension 93 and at the otherend to an arm 96 the other end of which is pivoted to the frame of themachine. At the junction of arms 95v and 96 is a roller bearing 97 whichengages the delivery cam 98 carried by the cam shaft D.

This cam shaft 98 is so cut and timed that the delivery fingers .willstart to approach the work or blank being operated on when thefinishingknives have been partly moved away from the work and before the clearingarm has been brought into action. They remain stationary in engagementwith the work on the work axis long enough for it to be cleared from thehead stock and the tail stock, when they rise rapidly to make room forthe next blank.

As the delivery arms are rising and before. they reach their restingpositions, they pass on each side of releasing pins 100 fixed tosuitable brackets on the frame of the machine. The result of thereleasing action of pins 100 is to spit or throw the finished bobbin inthe opposite direction to that in which the-delivery arms are moving andthis would drop it into the machinery if I did not providethe directinggates 103, 104. These consist of rimmed plates with the rims broken awayat the top and bottom each carried by a gate rod 105 and 106 slidable insuitable bearings 107 and 108. These are caused to advance toward eachother just after the delivery arms pass by into the position as shown bythe dotted lines in Fig. 8 where their rims will pass by the ends of thebobbin or work 0 whereby as the bobbin is removed fromthe deliveryfingers by pins 100 it is caught byv the rims of these gates anddirected downward into the delivery chute II which carries it to thepoint desired.

To actuate the gatesl03 and 104. I use an arm 109 pivoted near thevmiddle to a racketllQ on. the framefand at one end to rod 105 and atthe other end to an arm 111 which is bent downward and is carried by rod106.

Pivoted at the end of rod 106 is a lever 112 which is pivoted at 113 toa bracket on the frame of the machine and carries at its other end aroller bearing 1141- in engagement with a suitable slot 115 which formsa part of the gate cam 116 carried by cam shaft D. This cam 116 is socut and timed as to close in the gates 103 and 10 1 toward each otherjust after the bobbin has passed and to separate them after the bobbinhas been finally delivered.

I prefer to drive the various parts of my machine from the power shaft200 which is driven by pulley 210 and belt 211 from the source of power.A pulley 212 carries belt 205 and a pulley 213 carries belt 201 for thesaws and head stock respectively.

The cam shaft D is driven by gears 220, 2' 1, 222 and 223 from a pulley224 driven by belt 225 carried by shaft 200 or by one of the pulleys226.

i. prefer to drive all these from one power shaft and I prefer that allthe operating cams should be carried by one cam shaft but it is clearthat there might be two or more sources of power and two or more camshafts if desired.

The tail stock spindle lever 33 might be connected directly with theclearing arm lever 123 to act at exactly the same time, tln-irebydispensing with cam 127, but it is better to have the spindle andclearing arm separately adjustable as their operations are notnecessarily performed at the same time. If the blank is firmly driven onto the pins of the head stock clutch, the tail stock spindle may bewithdrawn without the blank following it and if no delivery means wereused, the spindle might be first withdrawn and then the clearing armcould act to push off the finished blank allowing it to drop. By usingthe steadying finger, however, and better by using the delivery fingers,the tail stock spindle can be withdrawn and at substantially the sametime, the clearing arm can act, as the friction of the fingers preventsthe blank from following the spindle. Thereby quicker action isobtained.

This machine embodies substantially the following elements. Means as thetail stock spindle, which are stationary, when they receive a blank andare adapted to support the blank while it is carried forward and forcedon to the rotative receiving member such as the head stock. Means forrotating the head stock and for forcibly advancing and afterwardretracting the tail stock are also required. IVhen the blank is advancedand begins to rotate, roughing means, preferably parallel circular sawswith means for rotating and for advancing and retracting. them,inovemputoward the ,axisuof the This 1givesquicker action. ,As soonasthe roughing means have done their work and begin, to be retractedtogether, with their hood andchute, finishing means, comprising knives,tippingtools,etc. arelbrought up and finish the blank. vA steadying.finger operr ates atsubstantially thelsame time with the finishingknives to prevent chatteringv and if desired tolkeep .theiblank.from-following the tail st ck spindle. Thisinay or may not be used. Whenfinished, means are provided for withdrawingthe tail stock spindle and aclearing arm to remove the blank by power from the head stockthusclearing the blank of the cutting machinery. f llt is better tocarefully remove the finished blankby grasping and withdrawing -'it bydelivery mear1s,carrying it to the point desired where it may bereleased by suitable pins orhooks to bedescribed. I prefer to providemeans for --receiving and directing the, delivered blank so that it willgently restor drop at exactly the desired point. lhis may bethe gatesand ,chute before described or prefer ably the endless chain deliverymeans which 'Lwill now describe.

Referring to Fig. 10, the steadying finger describedis replaced by alinger pivoted at 131 to the finishing carriage G0 medially of itslength It normally rests on a stop 132 and .is held down by a tensionspring 133 so thatits tip 134 which is curved will bear on the blank Cwhile it is beingoper ated on by the finishing knives.

prefer this construction of steadying finger wherean automatic feed withdelivery atrthe top is to be used, and in connection therewith ll.prefer the delivery fingers located underneath as will be n'owdescribed.A bracket at the front of the machine carries thepivot 1 11 for theconnecteddelivery arms 142 which carry delivery fingers 143 similar to91. Thesearmsare operated by a connecting rod 1% hung on a pivotedsuspending link 14:5 and carrying rollerbearing 146 in operativerelation with the delivery arm cam. As will be seen in the drawing,these arms with their fingers come up from underneath and carry thefinished blank down as shown by the dotted lines. a i a i For releasingmechanism, prefer to use parallel sprocket chains 150 and 151 carriedrespectively by two pair of sprockets 152and 153 on suitable shafts 154and 155 driven by any suitable mechanism from the camshaft D. Eachsprocket carries a plurality of hooks or pins and sprockets 152 are soplaced that these hooks 160 will pass on each side of the downward pathof delivery fingers 14:3 and as they are travelsprocket ,chain' 171whielralso engages a sprocket carriedby cam shaft Dior any othersuitable (lllVlIlg means may be used.

thedeliveryfingerswome uptromun derneath, 1 their free, ends may beshaped .so

as to merely receiveor'take butf'not fto seize are "finished, blank,\"As 'thelblank is th refore .not'grasped bu m rel supported when it iscleared by clearing pins 160, it is. not l.

rectinggates103 and 104;. VI claim:

1. In a woodturning machine, the combinecessary to use any equivalentforthedi;

nation of a headstock rotative on the work axis otthe machine and alta-i-l stock adapted to receive and support a blankland ,slidahle backand forth'in,line with the work axis, with a series ofrailelgircuiagsaws"or dilferent sizes rota 've qon an -airis. substantially, level with and; parallel to the: work axis and movabletoward"and from. said work axis on a horizontal-level therewith, a

finishing knife movable toward and from a line ibelowlsaid :work aniswhich coincides with the bottom of the finished blank, means forsliding the tail stock, means for. rotat :ing the circular, saws. lneansfonmoving the circular saws toward and from the work axis, and.meansforlmoving.the finislii ng knife toward and irom the line anew; the workas described. i f a y 2. In a wood turning machine, the combi; nation,ot'a head stock rotative on thework axis of the machine, and a tailstock ad anted to receive and support a blank and slidable back andforth in line with the work axis, with a series of parallel circularsaws of ditlerentwsizes rot-ative on an axis substan} tially levelwithflandlparallelto the work i 1 y axis and movable toward 1 and fromsaid work axis on a horiaontal level therewith, a

hood which incloses lthe circular saws and has a flaring mouth adjoiningthe work axis and ismovable with the, circular saws,

a chute connected to and movable with. the

hood, a finishing knife onithe side of the work {1X18 opposite thecircular saws and movable toward and from a, line belowsaid work axiswhich coincides withlthe bottom of the finished blank, meansiforgshdingthe tail stock, means for rotating, the circular saws, means for;movingtherirculausaws and hood toward. and fromnthe; work axis, andmeans for moving the finishing knife toward and from the line below thework as described. a 1 l 3. In a wood turning machine, the combi-=nation of a headstock rotative on, the work axis of the machine andhaving receiving pins for a blank, means for rotating the head stock, acam shaft, and a tail stock having aspindle adapted to receive andsupport a blank and slidable back and forth on said work axis, with atail stock cam carried by the cam shaft, connections between the tailstock spindle and the tail stock cam, a series of parallel circular sawsrotative on an axis substantially parallel with the work axis andmovable toward and from said work axis, means for rotating said saws, asaw cam carried by the cam shaft, connections between the saw cam andthe circular saws, a finishing carriage with finishing tools movabletoward and from said work axis on the opposite side from the circularsaws, a finishing cam carried by the cam shaft, and connections betweenthe finishing carriage and the finishing cam, said cams being so formedthat the, tail stock spindle will be advanced, that thereafter thecircular saws will be advanced and retracted, that thereafter thefinishing carriage will be ad vanced and retracted, and that thereafterthe tail stock spindle will be retracted as described.

4. In a wood turning machine, the combination of a head stock rotativeon the work axis of the machine and having receiving pins and a blank,means for rotating the head stock, a cam shaft, and a tail stock havinga spindle adapted to receive and support a blank and slidable back andforth on said work axis, with a, tail stock cam carried by the camshaft, connectionsbetween the tail stock spindle and the tail stock cam,a series of parallel circular saws rotative on an axis substantiallyparallel with the work aXis and movable toward and from said work axis,means for rotating said saws, a saw cam carried by the cam shaft,connections between the saw cam and the circular saws, a finishingcarriage with finishing tools movable toward and from said work axis onthe opposite side from the circular saws, a finishing cam carried by thecam shaft, and connec tions between the finishing carriage and thefinishing cam, a steadying arm which terminates in an elastic steadyingfinger movable toward and from the work axis and to and from the blank,21 steadying arm cam carried by the cam shaft, and connections betweenthe steadying arm and the steadying arm cam, said .cams being so formedthat the tail stock spindle will be advanced, that thereafter thecircular saws will be advanced and retracted, that thereafter thefinishing carriage will be advanced and retracted, and that at the sametime the steadying arm will. be moved toward and from the work axis, andthat thereafter the tail stock spindle will be retracted as described.

5. In a wood turning machine, the combi nation of a head stock rotativeon the work axis of the machine and having receiving pins and a blank,means for rotating the lead stock, a cam shaft, and a tail stock havinga spindle adapted to receive and support a blank and slidable back andforth on said work axis, with a tail stock cam carried by the cam shaft,connections between the tail stock and the tail stock cam, a series ofparallel circular saws rotative on an axis substantially parallel withthe work axis and movable toward and from said work axis, means forrotating said saws, a saw cam carried by the cam shaft, connectionsbetween the saw cam and the circular saws, a finishing carriage withfinishing tools movable toward and from said work axis on the oppositeside from the circular saws, a finishing cam carried by the cam shaft,and connections between the finishing carr'age and the finishing cam, aclearing arm, a clearing arm cam carried by the cam shaft. connectionsbetween the clearing arm and the clearing arm cam, said cams being soformed that the tail stock spindl will be advanced, that thereafter thecircular saws will be advanced and retracted, that thereafter thefinishing carriage will be advanced and retracted, and that thereafterthe tail stock spindle will be retracted and the clearing arm will beadvanced, as described.

6. In a wood turning machine, the combination of a head stock rotativeon the work axis of the machine and having receiving pins for a blank,means for rotating the head stock, a cam shaft, and a tail stock havinga. spindle adapted to receive and support a blank and slidable back andforth on said work axis, with a tail stock cam carried by the cam shaft,connections between the tail stock spindle and the tail stock cam, aseries of parallel circular saws rotative on an axis substantiallyparallel with the work axis and movable toward and from said work axis,means for rotating said saws, a saw cam carried by the cam shaft,connections between the saw cam and the circular saws, a finishingcarriage with finishing tools movable toward and from said work 'axis onthe op posite side from the circular saws, a finishing cam carried bythe cam shaft, and connections between the finishing carriage and thefinishing cam, a steadying arm which terminates in an elastic steadyingfinger movable toward and from the work axis and to and from the blank,a steadying arm cam carried by the cam shaft, and connections betweenthe steadying arm and the steadying arm cam, a clearing arm, a clearingarm cam carried by the cam shaft, connections between the clearing armand the clearing arm cam. said cams being so formed that the tail stockspindle will be advanced, that thereafter the circular saws will be ad'anced and retracted, that thereafter the finishing carriage will beadvanced and retracted, and that at the same I ia-386,399

time the steadying arm Will be moved tow and and iron the work axis, andthat thereafter the; tail. stock spindle will be retracted, andtheicleaning arm villbe advanced, as do 5 In a wood turning machine, thecombination of ahead stool; rotative on the We -l; axis ofjthe-niachineand having receiving pine; for a blank, n eans ytor rotating theheadstock, aeamshait, and a tail stock havinga spindle adapted toreceive and support a blank slidable back and forth on said worklanis,with a tail stock ca-inearried by the ea neshait, connections betweenthe tail 'stoek spindle and the tail stool: cam, a series ofparallelcircular saws rotative on an axis substant ally parallelwith the Work axs and movable- ;toward and from said Work axis, means for rotatinggeaideaWs, a saw livery finge thereatter tractedandthe clearing arm will beadlea n carried bythe cam shaft, eonnectioi'is, be

tween the saw carnfandthe circular same, a finishing" carriage withfinishing tools movable toward and fron'i said work axis on the pppositeside from the circular saws, a finishingc'am carried 'hy the cam shaft,and con nections between the finishing carriage and the -,finieh}ingea1n,- a: clearing arm, a clearing arm-camearriedby the cam shaft,connecQ .tlons hetweenthe lclearln arm and the clearing; armleam,connected elivery arms which terminate in spring delivery fingersmovable towardfand from the Work axis and to and vifroni the blank,adelivery arm cam carried livery arms and the delivery arm cam, said eansfbeing'so formed that the tail stock spindle will, be advanced, thatthereafter the circular-saws will be advancedand retracted,

that thereatter the finishinglearriage will be advanced and retracted,that thereafter the delivery arn'wwill be ifnoitedso that the deengagethe blank, and that the tail stock; spindle will be revanced, and thatthereafter the delivery arms Willi bemoved away from the Work axis, asdeseribedn,

1 8. In a Wood turning machine, thecomhination of a head axis ofthem-achine andhaving receiving pins for a blank, means for rotating thehead of parallel circular saws rotatire on an axie H ,SllgbSiJMltlQli)parallel with the Work 3X18 on stock, a cam shaft, and a tail stockllttvll'lgfl spindleadapted" to receive and support a blank; idslidalole back and forth on said Workaxie; with a. tail stock camcarried by thecam'w'; aft, conneotionebetween the tail rstocklspindleandthe tail stock cam, a series and norable toward and from said Work axis,means for rotating said serve, a canicarried by the cam shaft,connectionsv betweenrthe saw cam and thecirc ular saws, a hood ,iv hichincloses the circular seam; and has a flaring ngioiuth adjoining thework axis nationioit' ahead stock rotatine on the work Stock rotative onthe Work and r is movable WithU-the circular saws, a chute connected toandv movable Withathe hood, a finishing carriage with, finishing toolsmorable toward and :from work axis on the opposite side item the'circular saws, a finishing cam carried by! the cam aha ft, andconnections zbetween the 1 finishin g carriage and the finishing, ca1n,acleaning arm, a clearing arm cam carried the cam shaft, connectionsbetween the clearing 81111 tracted, that thereafter: the deliverir armswill be moved so that the delivery; fingers engage the blank, and thatthereafter the tail. stock spindle Willj ee retracted and the clearing"arm Will be advanced, ,andthat thereafter the delivery arms will bemoved away from the Work axis and while so being 1 moved the releasingmeans will; release the finished bobbin from the delivery fingers, as

, described, 1 b the cam shaft, connections betw the a 9. in a Woodturning inachinethe cornbi axie of the machine and having receivingpins" fora blank, means for rotating the head stock, a cam shaft, andtatail stock having a spindle adaptcdto receive and supportablank andslidable back and forth on said work axis, with a tail stock cam carrledby the cam shaft, conneetlons between the tail stock spindle andthe tailetoek cam,

a series of parallel circular saws, rotative on an substantiallyparallel 1 with the ork axis and movable toward and from said work axis,means for; rotating l-said saws, a

saw cam carried by the cam shaftyconnecitlons lbetween the saw cam andthe circular saws, a hood which incloses the circular saws' and hasaflaring mouth adjoining the ork axis: and is movable with the circularsaws, a chute connected tonndmova-ble with the hood, a finishingcarriage ith finishing ltools niorable toward and hem said ork axisonlthe opposite side fromthe circular saws, finishing cam,carrieclhbywthe cam shaft, and connections between the finishingcarriage and the finishing cam, a cleaning 'a-rm,-a clearing arm earncarried 1b) the earn ehaft, connections-between the clear ng arm and theclearing arm Scam, connected delivery arms which terinlnate each (delivtery fingere movable toward and from "the ork ax s a d to a d th b anh,ade :1

livery arm cam carried by the cam shaft, connections between thedelivery arms and the delivery arm cam, parallel endless chains, aplurality of pairs of releasing pins so carried thereby as to travelinto the path of the delivery fingers, said cams being so formed thatthe tail stock spindle will be advanced, that thereafter the circularsaws will be advanced and retracted, that thereafter the finishingcarriage will be advanced and retracted, that thereafter the deliveryarmswill be moved 'so that the delivery fingers engage the blank, andthat thereafter the tail stock spindle will be retracted and theclearing arm will be advanced, and that thereafter the delivery armswill be moved away from the work axis into operative relation with thereleasing pins, as de scribed;-

10. Ina wood turning machine, the combination of a head stock rotativeon the work axis'of the machine and having re ceiving pins for a blank,and a tail stock having'a spindle adapted to receive and sup port ablank and slidable back and forth on said work axis, with a series ofparallel circular saws of different sizes rotative on an axissubstantially parallel with the work axis and movable toward and fromsaid work axis, a finishing carriage with finishing tools movable towardand from the work axis, a clearing arm movable from the head stocktoward the tail stock in such p0- s'ition as to engage the finishedblank, means for advancing and retracting the tail stock spindle,meansfor advancing and retracting the clearing arm, means for moving thecircular saws toward and from the work axis, and means for moving thefinishing carriage toward and from the work axis as described.

11. In a wood turning machine, the combination of a head stock rotativeon the work axis of the machine and having receiving pins for a blank,and a tail stock having a spindle adapted to receive and support a blankand slidable back and forth on said work axis, with. a series ofparallel circular saws of difi'erent sizes rotative on an axissubstantiallyparallel with the work axis and movabletoward and from saidwork axis, a finishing carriage with finishing tools movable toward andfrom the work axis, an elastic steadying finger movable toward and fromthe work axis at the same time with the finishing carriage, means foradvancing and retracting the tail stock spin dle, means for moving thesteadying finger toward and from the work axis, means for moving thecircular saws toward and from the work axis, and means for moving thefinishing carriage toward and from the work axis as described.

12. In a wood turning machine, the com bination of a head stock rotativeon the work axis of the machine and having receiv ing pins for a blank,and a tail stock having a spindle adapted to receive and support a blankand slidable back and forth on said work axis, with a series of parallelcircular saws of different sizes rotative on an axis substantiallyparallel with the work axis and movable toward and from said work axis,a finishing carriage with finishing tools movable toward and from thework axis, an elastic steadying finger movable toward and from the workaxis at the same time with the finishing carriage, a clearing armmovable from the head stock toward the tail stock in such position as toengage the finished blank, means for advancing and retracting the tailstock spindle, means for advancing and retracting the clearing arm,means for moving the circular saws toward and from the work axis, andmeans for moving the finishing carriage toward and from the work axis asdescribed.

18. In a wood turning machine, the combination of a head stock rotativeon the work. axis of the machine and having receiving pins for a blank,and a tail stock having a spindle adapted toreceive and support a blankand slidable back and forth'on said. work axis, with a series ofparallel circular saws of different sizes rotative on an axissubstantially parallel with the work axis and movable toward and fromsaid work axis, a finishing carriage with finishing tools movable towardand from the work axis,'a clearing arm movable from the head stocktoward the tail stock in such position as to engage the finished blank,spring delivery fingers movable toward and from the work axis, means foradvancing and retracting the tail stock spindle, means for advancing andretracting the clearing arm, means for moving the delivery fingerstoward and from the work axis, means for moving the circu-' lar sawstoward and from the work axis, and means for moving the finishingcarriage toward and from the work axis as described.

14. In a wood turning machine, the combination of a head stock rotativeon the work axis of the machine and having receiving pins for a blank,and a tail stock having a spindle adapted to receive and support a blankand slidable back and forth on said work axis, with a series of parallelcircular saws rotative on an axis substantially parallel with the workaxis and movable toward and from said work axis, a finishing carriagewith finishing tools movable toward and from the work axis, a clearingarm movable from the head stock toward the tail stock in such positionas to engage the finished blank, spring delivery fingers movable towardand from the work axis, means for advancing and retracting the tailstock spindle, means for advancing and retracting the clearing arm,means for moving the circular saws toward and from the work axis,

means for movingthe finishing carriage tomoving the deliveryfingerstoward andifrom the i work axis, and means (for releasing thefinished blank from thedelivery fingers as described. a a

nation of ahead stocklrotative on the work axis of the machine, meansfor continnously rotating the head stoclnanda tailtstock adapted toreceive and sup ort a blank and .slidable ,back and forth in line withthe work axis, with a series of parallelcircular ,saWs rotativeion anaxis substantially parallel with the work axis and movable towardandfrom said work axis, means for rotating said saws,a finishing carriagemovable toward and from said work axis,\finishing tools carried thereby,means for advancing the tail stock spindle, means for thereafter movingthe circular saws toward and from the work axis,,means for thereaftermoving the finishing carriage toward and from the work axis, and meansfor w ll thereafter retracting the tail stock spindle as described.

' 16. In a woodturning machine, thecombination of a head stock rotativeon the Work axis of the machine, means forrotatingthe head stock, and atail stockadapted toreceive and support a blank and slidableback andforth in line with the-work axis, with a seriesof parallel circular saws.rotative on an axis substantially parallel With the 'Ofk axis andmovable toward and from said workaxis, means for rotating said saws, a

f at

finishing carriage movable toward and from sald .work ax s, finishingtools carried thereby,a clearing arm movable from the head stock towardthe tail stock, means for advancing the tail stock spindle, means forthereafter moving the circularsaws toward and from the work axis, meansfor thereafter moving the finishing carriage toward and from the workaxis, means forthereafter retractingthe tail stockspindle, and means forthen moving the clearing arm toward the tail stock as described.

s a 17. In a wood turning machine,the combination of a headstockrotative on the work axis of the machine, means for rotating thehead stock, and a tail stock adapted to receive and supporta blankandslidable back andforth in lineswith the work axis, with a seriesofparallel circular saws rotative on an axis substantially parallel withthe work axis and ,movablei toward and from ,sa d work ,ax s, means forrotating said I saws, .a finishing carriage movable toward and from sa dwork ax1s,fin1sh1ng toolscarried thereby, an; elastic -steadying finger,

rrneansfor advancing the tail stock spindle, fmeansafor thereaftermoving the circular saws-toward and from the work axis,[means forthereafter moving thefinishing, carriage and the steadying finger towardand from the work axis, and means for thereafter retracting the tailstockspindle as described.

18. In a Wood turning machine,the combination of a head stock rotativeon the 1 p WQIk ax1s=of the machine, means for rotat- ,15. In a Woodturning mach ne, the combimg the headstock, and a tailstock adaptedtoreceive and support a blankand slidable back and forth in line withthe work axis,

with a series ofparallel circular saws rotative on an axissubstantiallyparallel with the work axis and movable toward andfrom saidwork axis, means for rotating said saws,a finishing carriage movabletoward and fromsaid work axis, finishing tools car ried thereby, anelastic steadying finger, a clearing arm movable from thehead stocktoward thetail stock, means for advancing 11 ger toward and from theworkaxis, means for thereafter retracting the tailrstock spindie, andmeans for, then moving the clearing alrmttoward the tail stock asdescribed.

19. In a Wood turning machine, the comwork axis of the 1nachine,meansfor rotating the head stock, and atail stock adapted 1 to receive andsupport a blank and slidable back and forth in line with thejwork axis,w th a series of parallel circularsaws rotathe work axis and movabletoward and from said Work axis, means forrotating said saws, a finishingcarriage movable toward and from said work axis, finishing tools carriedthereby,a clearing arm movable from the head stock toward the tailstock, delivery fingers adapted to advance and take and to (lle, meansfor then movingthe clearing arm toward theta l stock, and means for thenbination of a head stock rotative on the i 1 tive on an axissubstantially parallel with l Withdrawing the delivery fingers asdescribed.

r 2 0. In a wood turningmachine, the com- ";bination of a head stockrotative on the work axis of the machine, means forrotating theheadstock,and a tail stock adapted ,to receive and support a blank andslidable hack and forth in line withthe work axis,

with fitwSGI'lfiS ofparallel circularsaws irota- ,tiveuonan axissubstantially parallel with :the workaxis r and movable toward and fromsaid work axis, means for rotating said saws,

a finishing carriage movable toward and i im sai Wo exiawfin shing t lsa -r i ried thereby, a clearing arm movable from the head stock towardthe tail stock, de-

' livery fingers adapted to advance and take and to withdraw thefinished blank, means for advancing the tail stock spindle, means forthereafter moving the circular saws toward and from the work axis, meansfor thereafter moving the finishing carriage toward and from the workaxis, means for thereafter advancing the delivery fingers, means forthereafter retracting the tail stock spindle, and means for then movingthe clearing arm toward the tail stock, and means for then withdrawingthe deliverv fingers, together with discharging means which thendischarge the finished blank from the delivery fingers as described.

21. In a wood turning machine, the combination of a head stock rotativeon the work axis of the machine, means for re tating the head stock, anda tail stock adapted to receive and support a blank and slideble backand forth in line with the work axis, with a series of parallel circularsaws rotative on an axis substantially parallel with the work axis andmovable toward and from said workaxis, means for rotating said saws, afinishing carriage movable toward and from said work axis, finishingtools carried thereby, a clearing arm movable from the head stock towardthe tail stock, delivery fingers adapted to advance and take and towithdraw the finished blank, means for advancing the tail stock spindle,means for thereafter moving the circular saws toward and from the workaxis, means for thereafter moving the finishing carriage toward and fromthe work axis, means for thereafter advancing the delivery fingers,means for thereafter retracting the tail stock spindle, means for thenmoving the clearing arm toward the tail stock, and means for thenwithdrawing the delivery fingers, together with discharging means whichthen discharge the finished blank from the delivery fingers, and meansfor receiving and directing the delivered blank as described.

22. In a wood turning machine, the combination of a head stockrotative'on the work axis of the machine, and a tail stock having aspindle adapted to receive a blank and slidable back and forth in linewith the work axis, with a series of parallel circular saws of differentsizes rotative on an axis substantially parallel with the work axis andmovable toward and from said work axis, a finishing knife movable towardand from said work axis, means for advancing and retracting the tailstock spindle, means for moving the circular saws toward and from thework axis, and means for moving the finishing knife toward and from thework axis as described.

23. In a wood turning machine, the combination of a rotative head stockhavin receiving pins, with a slidable tail stock adapted to receive andsupport a bobbin blank and to force it on the receiving pins, roughingmeans which include a plurality of closely associated circular saws ofdifferent diameters adapted to engage the blank after it engages thehead stock, finishing means adapted to engage the blank after theroughing means, delivery means for engaging the finished blank after itis finished by the finishing means, means for withdrawing the tailstock, means for clearing the finished blank from the head stock, meansfor withdrawing the delivery means, and means for discharging thefinished blank from the delivery means as described.

24. In a wood turning machine, the combination of a rotative head stockhavin receiving pins, with a slidable tail stock a apt ed to receive andsupport a bobbin blank and to force it on the receiving pins, roughingmeans which include a plurality of closely associated saws of differentdiameters adapted to engage the blank after it engages the head stock,finishing means adapted to engage the blank after the roughing means,means for withdrawing the tail stock after the blank is finished. andmeans for clearing the finished blank from the head stock as described.

25. In a wood turning machine, the combination of a rotative head stockhaving receiving pins, with a slidable tail stock adapted to receive andsupport a bobbin blank and to force it on the receiving pins, roughingmeans which include a plurality of closely associated saws of differentdiameters adapted to engage the blank after it engages the head stock,finishing means adapted to engage the blank after the roughing means,meansfor withdrawing the tail stock after the blank is finished, meansto prevent the blank from following the tail stock, and means forclearing the finished blank from the head stock as described.

26. In a wood turning machine, the combination of a rotative head stockhaving receiving pins, with a slidable tail stock adapted to receive andsupport a bobbin blank and to force it on the receiving pins, roughingmeans which include a plurality of closely associated saws of differentdiameters adapted to engage the blank after it engages the head stock,finishing means adapted to engage the blank after the roughing means,means for steadying the blank while engaged by the finishing means,delivery means for engaging the finished blank after it is finished bythe finishing means, means for withdrawing the tail st0"l means forclearing the finished blank from the head stock, means for withdrawingthe delivery means, and means for discharging the finished blank fromthe delivery means as described.

wetness 27. In a wood turning machine, the combination of supportingmeans for the blank, a plurality of circular saws, means forirotatingthe blank, means for rotating the saws at high speed while in contactwith the blank so as to rough the blank to its required shape, means formoving the saws into and out of contact with the blank, means fortrimming or finishing the blank, said last mentioned means beingautomatically movable into and out of contact with the blank after theroughing operation, and means for thereafter automatically deliveringthe finished blank.

28. In a wood turning machine, the combination of end supports for theblank, a series of circular roughing saws, means for rotating the sawsat a high speed while in contact with the blank whereby to shape thesame,

and supporting means for the saws including downwardly projecting armspivoted intermediate their ends, an olf-set arm connected to the lowerend of said first mentioned arms, a hanger arm pivotally supported atits upper end and having pivotal connection at its lower end with saidoff-set arm, movable trimming devices, and actuating means for saiddevices whereby to move the trimming devices into contact with the workas disengaged by the roughing saws.

29. In a wood turning machine, the combination of end supports for theblank, a drive shaft, a plurality of circular roughing saws, trimmingdevices, means operatively,

associated with said shaft for rotating the saws, a movable carrier forthe saws, a movable carrier for the trimming devices, cams on said shaftoperatively associated with said carriers whereby to alternately moveinto operative position relative to the work the roughing saws andtrimming devices.

30. In a wood turning machine, the combination with end supports for theblank, of a plurality of circular roughing saws, means for moving thesaws into and out of contact with the blank to shape the same, saidmeans including a rock-arm support for the saws, and means for actuatlngthe rock arm, a hood or housing for the saws, discharge Copies of thispatent may be obtained for chute leading from said hood, and said hoodand discharge chute being mounted for movement with said rock arm.

31. The process of making bobbins from blanks which consist of causing ablank to revolve with great rapidity in one direction upon a fixed axisand while so revolving to cause a large number of toothed cuttersrotating in the same direction with the blank to be moved upto saidblank for grinding it down, of withdrawing said cutters and immediatelythereafter of bringing up to it shearing cutters for finishing. l r

a 32. In a wood turning machine, the combination of end supports for theblank with means for rotating the blank in one direction at great speed,a plurality of thin closely associated circular saws with relativelysmall teeth for grinding down the blanks, means for rotating the saws atgreat speed in the same direction with the rotation of the blank, a hoodwhich incloses the saws and has a narrow mouth proximate the blank,means for moving the saws .an hood toward and from the blank, finishingknives movable toward and from the blank and means for advanclng thefinishing knives by the saws.

33. In a wood turning machine, the combination of end supports for theblank, with means for rotating the blank at great speed, a plurality ofthin closely associated circular saws with relatively small teeth forgrinding down the blank, means for rotat- 1ng the saws at great speed,means for moving the saws toward and from the blank, and l finishingknives movable toward and from the side of the blank opposite thecircular saws, together with means for advancing the finishing knives tothe blank after it has been ground down by the saws.

In testimony whereof I hereto allix my a signature in presence of twowitnesses.

LEONARD D. HAMBLETON.

Witnesses FISHER H. PnAnsoN, GARDNER W. Pnnason.

Washington, D, G. 3

